package com.lsz.seckill.util;

import org.springframework.stereotype.Component;
import org.apache.commons.codec.digest.DigestUtils;

@Component
public class MD5Util {

    public static String md5(String src) {
        return DigestUtils.md5Hex(src);
    }

    private static final String salt = "1a2b3c4d";

    public static String inputPassToFormPass(String inputPass){
        String str = "" + salt.charAt(0) + salt.charAt(2) + inputPass + salt.charAt(5) + salt.charAt(4);
        //从前端到后端的第一次MD5加密
        return md5(str);
    }

    public static String formPassToDBPass(String formPass,String salt){
        String str = "" + salt.charAt(0) + salt.charAt(2) + formPass + salt.charAt(5) + salt.charAt(4);
        //从后端到数据库的第二次MD5加密
        return md5(str);
    }


    public static String inputPassToDBPass(String inputPass,String salt){
        String formPass = inputPassToFormPass(inputPass);
        String dbPass =  formPassToDBPass(formPass,salt);
        return dbPass;
    }


    public static void main(String[] args) {
        System.out.println(inputPassToFormPass("123456"));
        System.out.println(formPassToDBPass("d3b1294a61a07da9b49b6e22b2cbd7f9","1a2b3c4d"));
        System.out.println(inputPassToDBPass("123456","1a2b3c4d"));
    }
}
